Figure 13.
Quarterly percentage (bars) and total number (values) of wild birds sampled by passive surveillance by RC in 2020, with quarter 1 starting in January 2020
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.